Transmission mechanism.



A. W. WESEMAN. TRANSMISSION MECHANISM. APPLIGATIONIILED FEBJ, 1907.1,041,927, Patented Oct. 22, 1912.

3 SHEETS-SHEET 3.

COLUMBIA PLANOGRAPH C0,, WASHINGTON, n. c.

-A. W. WBSEMAN. TRANSMISSION MECHANISM. APPLICATION FILED FEB. 1, 1907.

Patented Oct. 22, 1912.

3 SHEETS-SHEBT 2.

COLUMBIA PLANOGRAPH CID-,WASHINGTDN, D. c.

UNITED STATES PATENT FFTQE.

ALONZO VI. WESEMAN, 0F PLAINFIELD, NEW JERSEY, ASSIGNOE TO WALTER SCOTT,

0F PLAINFIELD, NEW JERSEY; ISABELLA SCOTT AND DAV ID JOHN SCOTT EXECU-TORS OF SAID WALTER SCOTT, DECEASED.

TRANSMISSION MECHANISM.

Specification of Letters Patent.

Patented Oct. 22, 1912.

Application filed February 1, 1907. Serial No. 355,246.

To all whom it may concern Be it known that I, ALonzo W. NEsnMAN, acitizen of the United States of America, and a resident of Plainfield,county of Union, State of New Jersey, have invented certain new anduseful Improvements in Transmission Mechanism, of which the following isa specification.

The present invention relates generally to transmission mechanism, andhas more particularly reference to a compensating connecting means, thatis: a novice which will transmit motion at a uniform speed from adriving to a driven member, whatever the relation of their centersbethey eccentric, concentric or constantly varying.

The chief object of the invention resides in producing a device of thischaracter that will lend itself readily to embodiment in connection withthe reciprocating bed motion of a printing machine of the bed andcylinder type.

Other objects will appear as the specification proceeds.

The specific form of compensating connecting means disclosed herein isbroadly newand is so claimed, and consists in the following arrangement.Interposed between a driving and a driven member is a connecting meanspivotally supported by one of said members on fixed pivots transverselyof the axis of rotation, and supported on its other side in the sameplane by means of pivots mounted in sliding boxes arranged to moveradially and laterally in slots on the other member. Obviously this formof compensating connecting means may be employed for any purpose where aflexible coupling is used such as on the main drive of an automobilewhere the jolting of the vehicle frequently offsets the centers of thedriving and driven members. The invention, however, is not to be limitedto the precise means shown, or the particular forms followed, as it willbe obvious to any one skilled in the art that variations may be madewithout departing from the legitimate and intended scope of theinvention.

In the accompanying drawings, the invention is embodied in a concreteand preferred form, in which- Figure 1 is a plan view of the partscomprising the bed motion of a printing machine, partly in section andwith portions removed and cut away to facilitate illustration, embodyingthe invention. Fig. 2 is an end elevation, partly in section, of theparts comprising the compensating connecting means, showing the drivingand driven members concentric. Fig. 3 is a view simi lar to Fig. 2showing the driving and driven members eccentric. Fig. 4 is a. side Viewpartly in section of the parts shown in Figs. 2 and 3. looking in thedirection of the arrow 4:, Fig. 2. Fig. 5 is a view similar to Fig. 4.but looking in the direction of the arrow 5, Fig. 2.

Similar characters of reference indicate corresponding parts in theseveral views.

1 indicates the side framing of a printing machine of any suitableconstruction.

2 indicates a fixed hollow bushing carried thereby on which is mountedthe driving gear 3. This gear constitutes in this instance the drivingmember and may be operated from any sourcesuch as by means of the pinion4. Extending through the hollow hub and from the side framing inunderneath the machine is the shaft 5 which in this instance is thedriven member. At its inner end this shaft carries the gear 6 adapted toengage with the bed racks 7 and 8 in a well known manner. Any suitablemeans may be employed for raising and lowering the shaft, but in thepresent instance is shown a sleeve 9,in which the shaft is supported,pivoted at 10 and provided with the arm 11 carrying the anti-frictionroll 12 adapted to engage with the cam 13. The rotation of the camcauses the sleeve 9 to be rocked on its pivots thereby raislng andlowering the shaft. This cam may be driven from the gear 3 by means ofthe train of gears 14. 15 and 16.

The compensating connecting means for transmitting uniform motion fromthe driv- 'ing gear to the shaft are as follows: 17 1ndicates a disk orring provided with the projections 18 and 19 which extend from itsopposite faces but in the same plane. In the present instance there aretwo sets of these projections. The projections 18 are fixedly pivoted at20 transversely of the axls of rotation on the radial arms 21 carried bythe shaft 5. The projections 19 are pivoted at 22 in the sliding boxesor guides 23, which latter are adapted to slide radially and laterallyin the complementary radial slots 2% on the driving gear.

The operation of the device is as follows: lVhen the shaft 5 and thedriving gear are concentric, which in the present construction theywould be when the rack engaging gear is in one of its rack engagingpositions, the compensating connecting means will re main relativelystationary and will simply follow the rotation of the driving member.This is indicated in Fig. 2. When, however, the shaft 5 and the drivinggear are eccentric with relation to each other as shown in Fig. 3, thenthe connecting disk will be oscillated around the pivots 20, while thesliding boxes will move radially, and, owing to the oscillation of thedisk, also laterally in the slots of the gear. By this means uniformrotation is imparted to the shaft 5 whatever its relation to the drivinggear.

What is claimed is:

1. Transmission mechanism comprising a shaft carrying a gear andconstituting a driven member, means for raising and lowering said shaft,a driving member, compensating means pivotally supported transversely tothe axis of rotation of one of said members, and guides pivotallymounted in the compensating means, engaging the other member and capableof radial movement with respect thereto.

2. A rotating driving member, a rotating driven member, one of saidmembers being provided with radial slots, connecting means pivotallysupported on the other of said members, and guides pivotally supportedon the connecting means and adapted to extend into the slots aforesaid,and to slide radially and laterally therein.

3. A rotating driving member, a rotating driven member, the drivingmember being provided with radial slots, connecting means pivotallysupported on the driven member, and guides pivotally supported on thecon necting means and adapted to extend into the slots aforesaid and toslide radially and laterally therein.

4. A rotating driving member, a rotating driven member, one of saidmembers being provided with radial slots, connecting means pivotallysupported transversely to the axis of rotation on the other of saidmembers,

and guides pivotally supported on the connecting means and adapted toextend into the slots aforesaid and to slide radially and laterallytherein.

5. A rotating driving member, a rotating driven member, the drivingmember being provided with radial slots, connecting means pivotallysupported transversely to the axis of rotation on the driven member, and

guides pivotally supported on the connecting means and adapted to extendinto the slots aforesaid and to slide radially and laterally therein.

6. A rotating driving member, a rotating driven member, one of saidmembers being provided. with radial slots, connecting means pivotallysupported on the other of said member, guides pivotally supported on theconnecting means and adapted to extend into the slots aforesaid and toslide radially and laterally therein, and means for intermittentlyoffsetting the axes of the driving and driven members.

7. A rotating driving member, a rotating driven member, the drivingmember being provided with radial slots, connecting means pivotallysupported on the driven member, guides pivotally supported on theconnecting means and adapted to extend into the slots aforesaid and toslide radially and laterally therein, and means for intermittentlyoffsetting the axes of the driving and driven members.

8. A rotating driving member, a rotating driven member, one of saidmembers being provided with radial slots, connecting means pivotallysupported transversely to the axis of rotation on the other of saidmemhere, guides pivotally supported on the connecting means and adaptedto extend into the slots aforesaid, and to slide radially and laterallytherein, and means for intermittently ofifsetting the axes of thedriving and driven members.

9. A rotating driving member, a rotating driven member, the drivingmember being provided with radial slots, connecting means pivotallysupported transversely to the axis 1 of rotation on the driven member,guides pivotally supported on the connecting means and adapted to extendinto the slots aforesaid, and to slide radially and laterally therein,and means for intermittently offsetting the axes of the driving anddriven members.

10. The combination with rotating driving and driven members, ofcompensating means pivotally supported transversely to 10 the axis ofrotation of one of said members, and. guides pivotally mounted on thecompensating means, engaging the other of said members and capable ofradial movement with respect thereto.

Signed. at New York city this 15th day of January 1907.

ALONZO W. WESEMAN.

Witnesses AxnL V. BEEKEN, DAVID J. SCOTT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

